CN101533144A - Lens barrel and imaging apparatus - Google Patents
Lens barrel and imaging apparatus Download PDFInfo
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- CN101533144A CN101533144A CN200910118769A CN200910118769A CN101533144A CN 101533144 A CN101533144 A CN 101533144A CN 200910118769 A CN200910118769 A CN 200910118769A CN 200910118769 A CN200910118769 A CN 200910118769A CN 101533144 A CN101533144 A CN 101533144A
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- 238000003384 imaging method Methods 0.000 title abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 59
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- 238000010586 diagram Methods 0.000 description 2
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- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- -1 silver halide Chemical class 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
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- Lens Barrels (AREA)
Abstract
The invention provides a lens barrel and imaging apparatus. The lens barrel having an increased strength against external impact. The lens barrel is configured to move in an optical axis direction. A photographic lens unit moves in the optical axis direction. A cylindrical unit is engaged with the photographic lens unit, and has an outer periphery formed thereon with a first cam groove followed by the photographic lens unit. The cylindrical unit performs rotation to thereby move the photographic lens unit in the optical axis direction. A rectilinear motion-causing restriction member is engaged with the cylindrical unit to restrict motion of the photographic lens unit to rectilinear motion. A second cylindrical unit is disposed around the photographic lens unit and the cylindrical unit to guide the photographic lens unit for rectilinear motion. A second rectilinear motion-causing restriction member restricts motion of the rectilinear motion-causing restriction member and the second cylindrical unit in a direction of rotation.
Description
Technical field
The picture pick-up device that the present invention relates to a kind of lens barrel and be provided with this lens barrel.
Background technology
Traditionally, use the film camera of silver halide film to popularize widely, still, in recent years, need not to use film and picture catching can be popularized rapidly to the digital camera in the storer.Thereby these digital cameras comprise being provided with and are used to make a plurality of optical lenses to move the digital camera of the zoom mechanism that changes the shooting multiplying power along optical axis.
TOHKEMY 2001-324663 communique discloses an example of the structure of Zoom lens barrel.In this Zoom lens barrel, by cam ring a plurality of lens maintaining parts of a plurality of lens of maintenance are moved along optical axis, simultaneously, by the motion of rotation restrictor restriction lens maintaining part on rotation direction.Utilize this structure, can make optical lens move to assigned address.
In recent years, along with the fast development of high magnificationization, the quantity of lens combination and lens barrel are tending towards increasing in the length of stretching out fully under the state, and promptly the size of Zoom lens barrel is tending towards increasing.On the other hand, strong request reduces the thickness of camera, therefore requires the minimized in size of Zoom lens barrel under the state of accommodating.In order to reduce the thickness of camera, each lens barrel that imagination reduces Zoom lens barrel size and each lens barrel of reducing of size for connection on optical axis direction makes Zoom lens barrel have the multistage structure that lens barrel quantity increases.For reducing of this camera thickness, several different methods has been proposed.
TOHKEMY 2000-66081 communique shows the example of the lens barrel that uses the prism-shaped metal straight line feather key that size reduces.Utilize this structure, can partly keep the lens barrel of lens barrel, make each lens barrel to move by straight line by the metallic bond that thickness reduces.Such lens barrel is than the space efficiency excellence that is kept by the plastic shaping lens barrel with straight-line conventional lenses lens barrel, and therefore, such lens barrel is suitable for miniaturization.
In addition, TOHKEMY 2003-21776 communique shows the example of the lens barrel with the cam lens barrel that connects with multistage.In this case, by approaching the lens barrel that metallic bond partly keeps lens barrel, be used for rectilinear motion, therefore, such lens barrel also is suitable for miniaturization.
In above-mentioned TOHKEMY 2000-66081 communique and TOHKEMY 2003-21776 communique under the situation of disclosed lens barrel, even for example, just can not have problems as long as rotating force is not applied to the linear slide metallic bond because camera falls lens barrel has been applied impact.Yet when applying rotating force, the straight line feather key is subjected to transverse load.Therefore, if rotating force is big, then the straight line feather key may come off, and causes the operation of lens barrel to be broken down.
In recent years, the size of camera reduces gradually, and along with further developing that size reduces, how absorbing external impact has effectively become problem to be solved.
Thereby, a kind of excellent structure precision lens barrel of anti-external impact simultaneously that has need be provided.
Summary of the invention
The invention provides a kind of lens barrel and the picture pick-up device that is provided with this lens barrel with strength against external impact of enhancing.
In a first aspect of the present invention, a kind of lens barrel is provided, this lens barrel can move on optical axis direction, and this lens barrel comprises: lens unit, this lens unit are configured to and can move on optical axis direction; Cylinder unit, this cylinder unit is disposed in interior week of lens unit and is configured to have cam part on the periphery of the cylinder unit of being formed on, be used to make lens unit to follow cam part, thereby this cylinder unit is configured to rotate lens unit is moved on optical axis direction; Rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are disposed in interior week of cylinder unit and the limit movement that is configured to lens unit is a rectilinear motion; Second cylinder unit, this second cylinder unit are disposed on the periphery of lens unit and cylinder unit and are configured to guide the lens unit rectilinear motion; And second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member is configured to straight limit limit movement member and the motion of second cylinder unit on rotation direction.
Utilize the structure of lens barrel according to a first aspect of the invention, owing to not only bear the impulsive force that is applied to lens unit by the rectilinear motion-causing restriction member on the interior week that is arranged in lens unit but also by second cylinder unit on the periphery that is disposed in lens unit, therefore, can increase the strength against external impact of lens barrel.In addition, can increase opposing owing to impact the limit that causes damaged intensity.
In a second aspect of the present invention, a kind of picture pick-up device is provided, this picture pick-up device comprises the lens barrel that can move on optical axis direction, this lens barrel comprises: lens unit, this lens unit are configured to and can move on optical axis direction; Cylinder unit, this cylinder unit is disposed in interior week of lens unit and is configured to have cam part on the periphery of the cylinder unit of being formed on, be used to make lens unit to follow cam part, thereby this cylinder unit is configured to rotate lens unit is moved on optical axis direction; Rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are disposed in interior week of cylinder unit and the limit movement that is configured to lens unit is a rectilinear motion; Second cylinder unit, this second cylinder unit are disposed on the periphery of lens unit and cylinder unit and are configured to guide the lens unit rectilinear motion; And second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member is configured to straight limit limit movement member and the motion of second cylinder unit on rotation direction.
In a third aspect of the present invention, a kind of lens barrel is provided, this lens barrel can move on optical axis direction, and this lens barrel comprises: lens unit, this lens unit are configured to and can move on optical axis direction; The limit movement that rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are configured to lens unit is a rectilinear motion; The limit movement that second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to rectilinear motion-causing restriction member is a rectilinear motion, and wherein, second rectilinear motion-causing restriction member comprises: annulus portion; Rectilinear motion restrictions, this rectilinear motion restrictions are outstanding and engage with rectilinear motion-causing restriction member along optical axis direction from annulus portion, thereby are rectilinear motion with the limit movement of rectilinear motion-causing restriction member; And distortion prevents maintaining part, this distortion prevents that maintaining part is formed in the annulus portion and is configured to and keeps the rectilinear motion restrictions in the mode that prevents rectilinear motion restrictions distortion, wherein, distortion prevents maintaining part also as the maintaining part that is connected to the 3rd cylinder unit rotationally, and the 3rd cylinder unit is configured to rotate so that lens unit moves on optical axis direction.
In a fourth aspect of the present invention, a kind of lens barrel is provided, this lens barrel can move on optical axis direction, and this lens barrel comprises: lens unit, this lens unit are configured to and can move on optical axis direction; The limit movement that rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are configured to lens unit is a rectilinear motion; The limit movement that second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to rectilinear motion-causing restriction member is a rectilinear motion, and wherein, second rectilinear motion-causing restriction member comprises: annulus portion; Rectilinear motion restrictions, this rectilinear motion restrictions are outstanding and engage with rectilinear motion-causing restriction member along optical axis direction from annulus portion, thereby are rectilinear motion with the limit movement of rectilinear motion-causing restriction member; And distortion prevents that maintaining part, this distortion from preventing that maintaining part is formed in the annulus portion of both sides of tangential direction of rectilinear motion restrictions, thereby keeps the rectilinear motion restrictions in the mode that prevents the distortion of rectilinear motion restrictions.
In a fifth aspect of the present invention, a kind of lens barrel is provided, this lens barrel can move on optical axis direction, and this lens barrel comprises: lens unit, this lens unit are configured to and can move on optical axis direction; The limit movement that rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are configured to lens unit is a rectilinear motion; The limit movement that second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to rectilinear motion-causing restriction member is a rectilinear motion, and wherein, second rectilinear motion-causing restriction member comprises: annulus portion; A plurality of rectilinear motion restrictions, these a plurality of rectilinear motion restrictions are outstanding and engage with rectilinear motion-causing restriction member along optical axis direction from annulus portion, thereby are rectilinear motion with the limit movement of rectilinear motion-causing restriction member; And distortion prevents that maintaining part, this distortion from preventing that maintaining part is formed in the annulus portion and is configured to and preventing that to prevent to be disposed in distortion each distortion in the maintaining part from preventing that the mode of rectilinear motion restrictions distortion of the both sides of maintaining part from keeping the rectilinear motion restrictions.
By the detailed description below in conjunction with accompanying drawing, it is more obvious that the features and advantages of the present invention will become.
Description of drawings
Fig. 1 is the stereographic map of outward appearance that is in the digital camera of power supply OFF state.
Fig. 2 is the stereographic map of outward appearance that is in the digital camera of power source ON state.
Fig. 3 is the vertical view of digital camera.
Fig. 4 is the back view of digital camera.
Fig. 5 is the upward view of digital camera.
Fig. 6 is the block scheme of the peripheral circuit of the controller of digital camera and this controller.
Fig. 7 is the in-built cut-open view that the pick-up lens lens barrel that is in the state of accommodating is shown.
Fig. 8 is the in-built cut-open view that the pick-up lens lens barrel that is in the ready state of shooting is shown.
Fig. 9 is the exploded perspective view of pick-up lens lens barrel.
Figure 10 is the stereographic map of second rectilinear motion-causing restriction member.
Figure 11 is the stereographic map of the 3rd cylinder unit.
Figure 12 is the stereographic map that imaging lens unit has been assembled in the state in second cylinder unit.
Figure 13 is the cut-open view of pick-up lens lens barrel.
Figure 14 is the process flow diagram that is provided with the operating process of digital camera from power source ON to the shooting end of pick-up lens lens barrel.
Embodiment
Describe the present invention in detail hereinafter with reference to the accompanying drawing that embodiments of the present invention are shown.Be suitable for being provided with the digital camera of pick-up lens lens barrel with collapsible (collapsible) zoom mechanism that can at random change the shooting multiplying power according to the picture pick-up device of present embodiment.
Fig. 1 is the stereographic map that is in the outward appearance of the digital camera 12 under the power supply OFF state.Fig. 2 is the stereographic map that is in the outward appearance of the digital camera 12 under the power source ON state.Fig. 3 is the vertical view of digital camera 12.Fig. 4 is the back view of digital camera 12.Fig. 5 is the upward view of digital camera 12.
On the front surface of digital camera 12, dispose the formation that is used for determining subject view finder 17, be used for when photometry and range finding, replenishing secondary light source 16, flashlamp 18 and the pick-up lens lens barrel 71 of light source.
On the end face of digital camera 12, dispose release-push 13, power supply switching push button 15 and Zoom switch 14.On the bottom surface of digital camera 12, dispose tripod installation portion 27 and battery card lid (card battery cover) 28.Storage Card Drivers device of hereinafter mentioning 42 and battery insertion section (not shown) are disposed in the battery card lid 28.
In addition, on the back side of digital camera 12, dispose the display 20 and the view finder eyepiece 19 that are used to switch various function operations buttons 21,22,23,24,25 and 26, form by LCD.When being pressed for one in action button 21,22,23,24,25 and 26, select digital camera 12 as an associative mode in the operator schemes such as image pickup mode, replay mode and dynamic menu screening-mode.Display 20 shows the view data that is stored in the view data in the storer 40 or reads from storage card on screen.In addition, when selecting replay mode, display 20 has reduced the picture size of a plurality of photographed images data and shown the view data that reduces on screen.
Fig. 6 is the block scheme of the peripheral circuit of the controller of digital camera 12 and controller.Controller 50 is made of CPU 46, ROM 45 and RAM 47 basically.Via bus 44 controller 50 is connected to release-push 13, action button 21 to 26, display 20, storer 40, Storage Card Drivers device 42 and other element.
In addition, the driving circuit 43 that is connected to controller 50 via bus 44 imaging apparatus 37 and the flashlamp 18 that are connected to zoom motor drive division 29, focus motor drive division 31, shutter drive division 32, aperture drive division 35, form by CCD or CMOS.Zoom motor drive division 29 drives lens barrel CD-ROM drive motor 29a.Focus motor drive division 31 drives focus motor 31a.The signal of origin self-controller 50 is controlled these parts drivingly.ROM 45 storages are used to control the control program of above-mentioned various element.The data that RAM 47 storage control programs are required.
In the digital camera 12 of as above structure, as user during by operating power switching push button 15 and energized, CPU 46 reads required control program and beginning initial operation from ROM 45.More specifically, controller 50 makes pick-up lens lens barrel 71 move to predetermined shooting and allows zone and starting camera function, enters the shooting holding state subsequently.
When the user pushed release-push 13 and makes a video recording, controller 50 detected the brightness of subjects by imaging apparatus 37 and detects the light value that obtains based on this and set aperture value and shutter speed.In addition, controller 50 judges whether to make flashlamp 18 flashes of light.Thereby whether the user also can select to make flashlamp 18 to force flash of light by operating operation button 21 in advance.
Then, controller 50 is found range measuring the distance of subject, and control focus motor drive division 31 is so that condenser lens unit 30 moves to predetermined focal position.Condenser lens unit 30 is made up of imaging lens unit 1 described later, second lens unit 2 and the 3rd lens unit 5.In addition, controller 50 control shutter drive divisions 32 to be opening shutter 33, thereby take desired images by imaging apparatus 37.In imaging apparatus 37, gather and the corresponding electric charge of light quantity that enters imaging apparatus 37 according to exposure control value, and be picture signal, subsequently this picture signal is outputed to analog signal processing portion 36 this charge conversion.
36 pairs of picture signals that receive of analog signal processing portion are carried out analog signal processing, then the processed images signal are outputed to A/D converter section 38.A/D converter section 38 converts the simulated data of the processed images signal that receives to numerical data.Then, numerical data is outputed to digital signal processing portion 39 in this digital signal processing portion 39, to handle.At last, numerical data is stored in the storer 40.
When operating operation button 22, undertaken compressing processing etc. as JPEG compression or TIFF compression etc. by the numerical data that 41 pairs in compression/de-compression portion is stored in the storer 40.Then, the numerical data of compressing be output to Storage Card Drivers device 42 and be stored in storage card and storer 40 in.Should be noted that when digital camera 12 does not have storer 40 digital signal of being handled by digital signal processing portion 39 is output to compression/de-compression portion 41, by Storage Card Drivers device 42 this digital signal is stored in the storage card.
When the Zoom switch 14 of user's operation setting on the end face of digital camera 12, by controller 50 via driving circuit 43 control zoom motor control parts 29 so that pick-up lens lens barrel 71 move along the optical axis of lens (that is, on the direction of the optical axis at the center of scioptics).The user can operate Zoom switch 14 and amplify or dwindle the image that is presented on the display 20, promptly carries out so-called digital zoom operation.
Then, explanation is arranged on the structure of the lens combination in the pick-up lens lens barrel of digital camera 12.Fig. 7 is the in-built cut-open view that the pick-up lens lens barrel 71 that is in the state of accommodating is shown.Fig. 8 is the in-built cut-open view that the pick-up lens lens barrel 71 that is in the ready state of shooting is shown.Fig. 9 is the exploded perspective view of pick-up lens lens barrel 71.
Periphery in cylinder unit 3 is formed with first cam path (cam part) 3a, and each driven member 1a follows the first cam path 3a.The second cam path (not shown) is formed on three circumferential positions in interior week of cylinder unit 3, is used to make each driven member 2a to move in the mode of following each second cam path.Similarly, the 3rd cam path (not shown) is formed on three circumferential positions in interior week of cylinder unit 3, is used to make each driven member 5a to move in the mode of following each the 3rd cam path.
In addition, rectilinear motion-causing restriction member 4 engages with cylinder unit 3.Cylinder unit 3 and rectilinear motion-causing restriction member 4 bayonet type each other connect (bayonet-coupled), and cylinder unit 3 is along the periphery circumference rotation of rectilinear motion-causing restriction member 4.Imaging lens unit 1 moves along optical axis, is rectilinear motion by rectilinear motion-causing restriction member 4 with the limit movement of imaging lens unit 1.The motion of each in second lens unit 2 and the 3rd lens unit 5 also is restricted to rectilinear motion by rectilinear motion-causing restriction member 4.
In addition, second cylinder unit 7 is provided with driven member 7a, and this driven member 7a follows the cam path (not shown) in the interior week that is formed on the 3rd cylinder unit 8.By the cam path (not shown) in the interior week that is formed on stationary cam unit 9 the 3rd cylinder unit 8 can be moved along optical axis.The 3rd cylinder unit 8 directly receives the rotating force from driving ring 10, and this driving ring 10 is assembled on the periphery of stationary cam unit 9.Keep driving ring 10 by lid member 11.Can take in imaging lens unit 1, second cylinder unit 7 and the 3rd cylinder unit 8 along optical axis direction.
Figure 10 is the stereographic map of second rectilinear motion-causing restriction member 6.Figure 11 is the stereographic map of the 3rd cylinder unit 8.Figure 12 is the stereographic map that imaging lens unit 1 is assembled in the state in second cylinder unit 7.Figure 13 is the cut-open view of pick-up lens lens barrel.
Second rectilinear motion-causing restriction member 6 is by the 6q of annulus portion, all outstanding two rectilinear motion restrictions 6a and two rectilinear motion restrictions 6b constitute along optical axis direction from the 6q of annulus portion.In addition, rib 6r is formed on position near one of them rectilinear motion restrictions 6b in the radially outstanding mode along the 6q of annulus portion.On the other hand, on the periphery of rectilinear motion-causing restriction member 4, be formed with two and be constrained to the 4a of rectilinear motion portion, each rectilinear motion restrictions and two relevant joints that are constrained among the 4a of rectilinear motion portion among two rectilinear motion restrictions 6a, thus, along rectilinear direction direct straight motion limiting member 4.In addition, on the interior week of second cylinder unit 7, be formed with two and be constrained to the 7b of rectilinear motion portion, among two rectilinear motion restrictions 6b each and two relevant joints that are constrained among the 7b of rectilinear motion portion of second cylinder unit 7, thus, guide second cylinder unit 7 along rectilinear direction.
As shown in figure 11, the 3rd cylinder unit 8 is assembled in second rectilinear motion-causing restriction member 6, makes the bayonet part (connection part) of second rectilinear motion-causing restriction member 6 be assembled in by in each groove of bayonet part 8b.This makes the 3rd cylinder unit 8 and second rectilinear motion-causing restriction member 6 as one man move forward and backward along optical axis direction, and keeps the 3rd cylinder unit 8 rotationally.
The linear slide key 6i that is formed on second rectilinear motion-causing restriction member 6 engages with each straight line guide portion (not shown), thus, limits the rotation of second rectilinear motion-causing restriction member 6.
Incidentally, as small-sized consumer device such as digital camera may owing to the user do not note a little fall or collide with something.Therefore, require digital camera to have the intensity of the impact that opposing to a certain degree causes by this accident.
Suppose that imaging lens unit 1 stops at the cam part 3a that is formed on the cylinder unit 3 along position that optical axis direction extends basically point-blank, it is the fast position of stretching out of lens barrel, if under this state imaging lens unit 1 is applied impact, then impulsive force is passed to cam part 3a via driven member 1a.The impulsive force that is passed to cam part 3a provides rotating force for cylinder unit 3.Yet, do not rotated by the cylinder unit 3 of zoom motor drive division 29 lockings.Therefore, imaging lens unit 1 is subjected to opposite rotating force.This rotating force of imaging lens unit 1 is passed to rectilinear motion-causing restriction member 4, is passed to the rectilinear motion restrictions 6a that is formed on second rectilinear motion-causing restriction member 6 then.
As Figure 12 and shown in Figure 13, imaging lens unit 1 has six the 3rd rectilinear motion restrictions 1b that are respectively formed at the synchronous position of driven member 1a.In addition, second cylinder unit 7 is formed with and all has the 3rd of elongated slot shape and be constrained to the 7c of rectilinear motion portion.Under common mode of operation, the 3rd rectilinear motion restrictions 1b and the 3rd is constrained to the 7c of rectilinear motion portion and does not contact.When impact is applied to imaging lens unit 1, if elastic deformation such as second rectilinear motion-causing restriction member 6 and imaging lens unit 1 is rotated, then making the 3rd rectilinear motion restrictions 1b and the 3rd be constrained to the 7c of rectilinear motion portion contacts, thus, second cylinder unit 7 is subjected to the rotating force from imaging lens unit 1.This rotating force is passed to the rectilinear motion restrictions 6b that is formed on second rectilinear motion-causing restriction member 6.
Utilize above-mentioned structure, not only can but also can bear the impact that is applied to imaging lens unit 1 by second cylinder unit 7 that is positioned at the radial outside position by the rectilinear motion-causing restriction member 4 that is positioned at the radially inner side position, this makes can increase the limit (margin) of the intensity of resisting impact failure.
In addition, apply when impacting, impulsive force is passed to second rectilinear motion-causing restriction member 6 by arbitrary path, therefore, need prevent to be subjected to the distortion of all connection parts of impulsive force.Therefore, form connection part (above-mentioned bayonet part) 6c, 6d, 6e, 6f, 6g and 6h as shown in figure 10, make that each the both sides in rectilinear motion restrictions 6a and 6b form two connection parts, thus, increased non-deformability.In brief, connection part 6c, 6d, 6e, 6f, 6g and 6h prevent maintaining part with the distortion of moving linearly restrictions 6a and 6b.
In addition, as shown in figure 11, the rear portion of the 3rd cylinder unit 8 (rear end) is formed with the groove shape by bayonet part 8b, and connection part 6c, 6d, 6e, 6f, 6g and 6h engage by bayonet type and be assembled into by among the bayonet part 8b.Thereby the 3rd cylinder unit 8 and second rectilinear motion-causing restriction member 6 can as one man move along optical axis direction when can rotating basically.
As shown in figure 10, by as one group connection part 6d and 6e and the distortion that prevents rectilinear motion restrictions 6a basically as one group connection part 6g and 6h.On the other hand, by as one group connection part 6c and 6d and the distortion that prevents rectilinear motion restrictions 6b basically as one group connection part 6f and 6g.Thereby connection part 6d, 6e, 6g, 6h, 6c, 6d, 6f and 6g also prevent maintaining part as distortion.
By forming the effect that connection part can obtain to prevent each rectilinear motion restrictions distortion in the both sides of rectilinear motion restrictions simply.Yet, when thinking that the 6q of annulus portion of second rectilinear motion-causing restriction member 6 is bowlders, can by on the tangent line of each rectilinear motion restrictions 6b (tangentially promptly) deformation ability that a pair of (group) connection part increases opposing second rectilinear motion-causing restriction member 6 is set.For example, be provided as one group connection part 6c and 6d on the tangent line m of a rectilinear motion restrictions 6b therein.Similarly, be provided as one group connection part 6f and 6g on the tangent line n of another rectilinear motion restrictions 6b therein.
Usually, each rectilinear motion restrictions needs two connection parts, therefore, in the present embodiment, owing to there are four rectilinear motion restrictions, therefore, need altogether to consider eight connection parts.Yet, can keep two rectilinear motion restrictions simultaneously with one of them rectilinear motion restrictions 6a and the two adjacent connection part 6d of one of them rectilinear motion restrictions 6b.Connection part 6g also is like this.Above-mentioned structure makes the space that connection part is set on the 6q of annulus portion (side face) can reduce second rectilinear motion-causing restriction member 6, therefore, and the saving of implementation space and strengthened the degree of freedom of design.
Figure 14 is the process flow diagram of the operating process that finishes from power source ON to shooting that is provided with the digital camera of pick-up lens lens barrel 71.The control program that is used for this process is stored in the ROM 45 of controller 50, and reads this control program to carry out this control program by CPU 46 from ROM 45.
When the user connected the power supply of digital camera 12, CPU 46 sent instruction to zoom motor drive division 29, rotated (step S1) so that lens barrel CD-ROM drive motor 29a carries out CW (clockwise direction).Then, CPU 46 carries out scheduled operation, and after confirming that pick-up lens lens barrel 71 has moved to camera position, CPU 46 makes zoom motor drive division 29 stop lens barrel CD-ROM drive motor 29a.As a result, the pick-up lens lens barrel becomes the state of Fig. 2 from the state of Fig. 1.
Then, CPU 46 waits for that the user presses release-push 13 (step S3).When pressing release-push 13, CPU 46 carries out photometry, thereby obtains the monochrome information (step S4) on the subject.
On the other hand, if the monochrome information that is obtained represents that than acquiescence brightness low brightness then CPU 46 does not carry out and makes aperture 34 reach the operation in the light path and aperture 34 is remained on the state of keeping out of the way from light path, and advances to the processing among the step S7.
Thereafter, CPU 46 operates condenser lens unit 30 so that this condenser lens unit 30 moves (step S7) to the position that subject focuses on, and begins camera operation (step S8) in this position.Then, CPU 46 switches to closure state with shutter 33 from open mode, thereby blocks incident light (step S9), finishes camera operation (step S10) subsequently.
Thereafter, CPU 46 makes aperture 34 keep out of the way (step S11) from light path, and makes condenser lens unit 30 move to its initial position (step S12).Then, CPU 46 turns back to step S3, and repeats the processing identical with above-mentioned processing, is cut off up to power supply.
Pick-up lens lens barrel according to present embodiment, when utilizing linear slide key (rectilinear motion restrictions 6a and rectilinear motion restrictions 6b) limit movement of lens barrel to be in line motion in space-saving mode, not only by the rectilinear motion-causing restriction member 4 that is positioned at the radially inner side position but also the impact of bearing the front end that is applied to lens barrel by second cylinder unit 7 that is positioned at the radial outside position, this makes and can reduce owing to impact the danger that causes damage.In addition, formation also prevents the bayonet socket shape connection part of maintaining part as distortion near each linear slide key, thus, can prevent the distortion of linear slide key on certain Cheng Ding.
The invention is not restricted to above-mentioned embodiment, but can carry out the modification of variety of way based on theme of the present invention, as long as the function that limits in function and the appended claims or identical by the function of the structure realization of above-mentioned embodiment, these modification just should comprise within the scope of the invention.
For example, although in the above-described embodiment, the compact digital camera has been described as an example, this is not restrictive, and the present invention can also be applicable to film camera, digital video camera, digital SLR (single lens reflex camera) etc.
Though the present invention has been described with reference to exemplary embodiment, should be appreciated that, the invention is not restricted to disclosed exemplary embodiment.The scope of appended claims will meet the most wide in range explanation, thereby comprise all modification, equivalent structure and function.
The application requires the right of priority of the Japanese patent application No.2008-061148 of submission on March 11st, 2008, and the full content of this Japanese patent application is contained in this by reference.
Claims (12)
1. lens barrel, this lens barrel can move on optical axis direction, and described lens barrel comprises:
Lens unit, this lens unit are configured to and can move on optical axis direction;
Cylinder unit, this cylinder unit is disposed in interior week of described lens unit and is configured to have cam part on the periphery that is formed on described cylinder unit, be used to make described lens unit to follow described cam part, thereby described cylinder unit is configured to rotate described lens unit is moved on optical axis direction;
Rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are disposed in interior week of described cylinder unit and the limit movement that is configured to described lens unit is a rectilinear motion;
Second cylinder unit, this second cylinder unit are disposed on the periphery of described lens unit and described cylinder unit and are configured to guide described lens unit rectilinear motion; And
Second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to limit described rectilinear motion-causing restriction member and the motion of described second cylinder unit on rotation direction.
2. lens barrel according to claim 1, it is characterized in that, described lens barrel comprises the 3rd cylinder unit, and the 3rd cylinder unit is disposed on the periphery of described second cylinder unit and is constructed such that described cylinder unit and described second cylinder unit move on optical axis direction
Wherein, described second rectilinear motion-causing restriction member comprises: annulus portion; A plurality of rectilinear motion restrictions, these a plurality of rectilinear motion restrictions are outstanding and engage with described rectilinear motion-causing restriction member and described second cylinder unit along optical axis direction from described annulus portion, thereby are rectilinear motion with the limit movement of described rectilinear motion-causing restriction member and described second cylinder unit; And connection part, this connection part is formed in the described annulus portion of both sides of each the rectilinear motion restrictions in the described rectilinear motion restrictions, makes this connection part be connected to described the 3rd cylinder unit rotationally.
3. lens barrel according to claim 2, it is characterized in that, described second rectilinear motion-causing restriction member comprises that the distortion in the described annulus portion of both sides of the tangential direction that is formed on each the rectilinear motion restrictions in the described rectilinear motion restrictions prevents maintaining part, thereby keeps described rectilinear motion restrictions in the mode that prevents described rectilinear motion restrictions distortion.
4. lens barrel according to claim 3, it is characterized in that described distortion prevents that each distortion in the maintaining part from preventing maintaining part and keeps described rectilinear motion restrictions in case stop bit prevents the mode of described rectilinear motion restrictions distortion of the both sides of maintaining part in this distortion.
5. lens barrel according to claim 3 is characterized in that, described connection part also prevents maintaining part as described distortion, and described connection part is connected to the rear end of described the 3rd cylinder unit by bayonet type.
6. picture pick-up device, this picture pick-up device comprises the lens barrel that can move on optical axis direction,
Described lens barrel comprises:
Lens unit, this lens unit are formed at and can move on the optical axis direction;
Cylinder unit, this cylinder unit is disposed in interior week of described lens unit and is configured to have cam part on the periphery that is formed on described cylinder unit, be used to make described lens unit to follow described cam part, thereby described cylinder unit is configured to rotate described lens unit is moved on optical axis direction;
Rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are disposed in interior week of described cylinder unit and the limit movement that is configured to described lens unit is a rectilinear motion;
Second cylinder unit, this second cylinder unit are disposed on the periphery of described lens unit and described cylinder unit and are configured to guide described lens unit rectilinear motion; And
Second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to limit described rectilinear motion-causing restriction member and the motion of described second cylinder unit on rotation direction.
7. lens barrel, this lens barrel can move on optical axis direction, and described lens barrel comprises:
Lens unit, this lens unit are configured to and can move on optical axis direction;
The limit movement that rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are configured to described lens unit is a rectilinear motion;
The limit movement that second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to described rectilinear motion-causing restriction member is a rectilinear motion,
Wherein, described second rectilinear motion-causing restriction member comprises:
Annulus portion;
Rectilinear motion restrictions, this rectilinear motion restrictions are outstanding and engage with described rectilinear motion-causing restriction member along optical axis direction from described annulus portion, thereby are rectilinear motion with the limit movement of described rectilinear motion-causing restriction member; And
Distortion prevents that maintaining part, this distortion from preventing that maintaining part is formed in the described annulus portion and is configured to and keeping described rectilinear motion restrictions in the mode that prevents described rectilinear motion restrictions distortion,
Wherein, described distortion prevents maintaining part also as the maintaining part that is connected to the 3rd cylinder unit rotationally, and described the 3rd cylinder unit is configured to rotate so that described lens unit moves on optical axis direction.
8. lens barrel according to claim 7 is characterized in that, described second rectilinear motion-causing restriction member has rib, and described rib is formed on position near described rectilinear motion restrictions in the radially outstanding mode along described annulus portion.
9. lens barrel, this lens barrel can move on optical axis direction, and described lens barrel comprises:
Lens unit, this lens unit are configured to and can move on optical axis direction;
The limit movement that rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are configured to described lens unit is a rectilinear motion;
The limit movement that second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to described rectilinear motion-causing restriction member is a rectilinear motion,
Wherein, described second rectilinear motion-causing restriction member comprises:
Annulus portion;
Rectilinear motion restrictions, this rectilinear motion restrictions are outstanding and engage with described rectilinear motion-causing restriction member along optical axis direction from described annulus portion, thereby are rectilinear motion with the limit movement of described rectilinear motion-causing restriction member; And
Distortion prevents that maintaining part, this distortion from preventing that maintaining part is formed in the described annulus portion of both sides of tangential direction of described rectilinear motion restrictions, thereby keeps described rectilinear motion restrictions in the mode that prevents described rectilinear motion restrictions distortion.
10. lens barrel according to claim 9 is characterized in that, described second rectilinear motion-causing restriction member has rib, and described rib is formed on position near described rectilinear motion restrictions in the radially outstanding mode along described annulus portion.
11. a lens barrel, this lens barrel can move on optical axis direction, and described lens barrel comprises:
Lens unit, this lens unit are configured to and can move on optical axis direction;
The limit movement that rectilinear motion-causing restriction member, this rectilinear motion-causing restriction member are configured to described lens unit is a rectilinear motion;
The limit movement that second rectilinear motion-causing restriction member, this second rectilinear motion-causing restriction member are configured to described rectilinear motion-causing restriction member is a rectilinear motion,
Wherein, described second rectilinear motion-causing restriction member comprises:
Annulus portion;
A plurality of rectilinear motion restrictions, these a plurality of rectilinear motion restrictions are outstanding and engage with described rectilinear motion-causing restriction member along optical axis direction from described annulus portion, thereby are rectilinear motion with the limit movement of described rectilinear motion-causing restriction member; And
Distortion prevents that maintaining part, this distortion from preventing that maintaining part is formed in the described annulus portion and is configured to and preventing that to prevent to be disposed in described distortion each distortion in the maintaining part from preventing that the mode of described rectilinear motion restrictions distortion of the both sides of maintaining part from keeping described rectilinear motion restrictions.
12. lens barrel according to claim 11 is characterized in that, described second rectilinear motion-causing restriction member has rib, and described rib is formed on position near described rectilinear motion restrictions in the radially outstanding mode along described annulus portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-061148 | 2008-03-11 | ||
| JP2008061148 | 2008-03-11 | ||
| JP2008061148A JP5094485B2 (en) | 2008-03-11 | 2008-03-11 | Lens barrel and photographing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101533144A true CN101533144A (en) | 2009-09-16 |
| CN101533144B CN101533144B (en) | 2011-11-30 |
Family
ID=40532517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101187692A Expired - Fee Related CN101533144B (en) | 2008-03-11 | 2009-03-11 | Lens barrel and imaging apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7936985B2 (en) |
| EP (1) | EP2101206B1 (en) |
| JP (1) | JP5094485B2 (en) |
| CN (1) | CN101533144B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375202A (en) * | 2010-08-18 | 2012-03-14 | 佳能株式会社 | Lens barrel |
| CN104423006A (en) * | 2013-09-11 | 2015-03-18 | 索尼公司 | Lens barrel and imaging apparatus |
| CN109669268A (en) * | 2019-02-25 | 2019-04-23 | 京东方科技集团股份有限公司 | Virtual reality barrel assembly and virtual reality device |
| CN110658622A (en) * | 2019-08-19 | 2020-01-07 | 深圳市矽赫科技有限公司 | Automatic-adjustment micro-display optical eyepiece and adjustment method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101599881B1 (en) * | 2009-06-30 | 2016-03-04 | 삼성전자주식회사 | Digital image signal processing apparatus method for controlling the apparatus and medium for recording the method |
| US8520328B2 (en) * | 2010-02-05 | 2013-08-27 | Canon Kabushiki Kaisha | Lens barrel and imaging apparatus |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08160277A (en) * | 1994-12-01 | 1996-06-21 | Canon Inc | Zoom lens |
| JP2000066081A (en) | 1998-08-20 | 2000-03-03 | Canon Inc | Lens barrel |
| US6934096B1 (en) | 2000-05-16 | 2005-08-23 | Canon Kabushiki Kaisha | Optical device |
| JP3679683B2 (en) | 2000-05-16 | 2005-08-03 | キヤノン株式会社 | Imaging device |
| JP2003021776A (en) | 2001-07-10 | 2003-01-24 | Olympus Optical Co Ltd | Zoom lens frame and zoom camera |
| JP3655865B2 (en) * | 2001-10-31 | 2005-06-02 | ペンタックス株式会社 | Lens barrel |
| JP3689379B2 (en) * | 2002-03-20 | 2005-08-31 | 株式会社タムロン | High magnification zoom lens |
| JP4763342B2 (en) * | 2005-05-13 | 2011-08-31 | 株式会社Ｓｕｗａオプトロニクス | Lens barrel and imaging device |
| JP4817877B2 (en) * | 2006-02-20 | 2011-11-16 | キヤノン株式会社 | LENS DEVICE AND IMAGING DEVICE |
-
2008
- 2008-03-11 JP JP2008061148A patent/JP5094485B2/en not_active Expired - Fee Related
-
2009
- 2009-03-10 EP EP09154765A patent/EP2101206B1/en not_active Not-in-force
- 2009-03-10 US US12/401,615 patent/US7936985B2/en not_active Expired - Fee Related
- 2009-03-11 CN CN2009101187692A patent/CN101533144B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375202A (en) * | 2010-08-18 | 2012-03-14 | 佳能株式会社 | Lens barrel |
| CN102375202B (en) * | 2010-08-18 | 2014-05-28 | 佳能株式会社 | Lens barrel |
| CN104423006A (en) * | 2013-09-11 | 2015-03-18 | 索尼公司 | Lens barrel and imaging apparatus |
| CN104423006B (en) * | 2013-09-11 | 2018-08-14 | 索尼公司 | Lens barrel and imaging device |
| CN109669268A (en) * | 2019-02-25 | 2019-04-23 | 京东方科技集团股份有限公司 | Virtual reality barrel assembly and virtual reality device |
| US11880050B2 (en) | 2019-02-25 | 2024-01-23 | Beijing Boe Optoelectronics Technology Co., Ltd. | Virtual reality lens barrel assembly, virtual reality device and control method |
| CN110658622A (en) * | 2019-08-19 | 2020-01-07 | 深圳市矽赫科技有限公司 | Automatic-adjustment micro-display optical eyepiece and adjustment method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US7936985B2 (en) | 2011-05-03 |
| EP2101206A3 (en) | 2009-10-28 |
| EP2101206A2 (en) | 2009-09-16 |
| JP2009217013A (en) | 2009-09-24 |
| US20090232484A1 (en) | 2009-09-17 |
| EP2101206B1 (en) | 2013-02-13 |
| CN101533144B (en) | 2011-11-30 |
| JP5094485B2 (en) | 2012-12-12 |
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